Rooms and objects implemented

Rooms and objects are coded and seems to run pretty bugfree and smoothly. The program is somewhat refined (e.g. only the topmost object will be clicked, object order can be defined in a file, known audio bugs seems to be vanquished etc.) Minor cosmetic imperfections still exist, and more objects should be added in time (that is however not a programming issue). Javadoc is added for about 2/3 of the methods and classes. Some .wav-files will consistently not load but that is supposedly due to matters beyond my control (most .wav-files run just fine and there is no apparent difference between the ones that always load and the ones that always fail.) Animated gifs are supported but not often used yet. The aim has been minimal hard-coding. 

Addressed issues:
Create clickable objects
Create a map with several rooms